Why do powerful intervening militaries have such difficulty managing comparatively weak local partners in counterinsurgency wars? Set within the context of costly, large-scale military interventions such as the US war in Afghanistan, this book explains the conditions by which local allies comply with (or defy) the policy demands of larger security partners. Analysing nine large-scale post-colonial counterinsurgency interventions including Vietnam, Afghanistan, Iraq, Sri Lanka, Yemen, Lebanon, Cambodia, and Angola, this book utilizes thousands of primary source documents to identify and examine over 450 policy requests proposed by intervening forces to local allies. By dissecting these problematic partnerships, this book exposes a critical political dynamic in military interventions. It will appeal to academics and policymakers addressing counterinsurgency issues in foreign policy, security studies and political science.